TSUBAMEプロジェクト
  • TSUABAME PROJECT OVERVIEW

  •   TSUBAME is the fourth satellite development project undertaken within the Laboratory for Space Systems (LSS) at Tokyo Institute of Technology (Tokyo Tech). Based on the experience and acquired technology from previous projects, TSUBAME demonstrates a satellite platform that can be used for a variety of engineering and scientific missions.


  • TSUBAME PROJECT OBJECTIVES

  • Provide students with hands-on experience with satellite development. The TSUBAME project gives students opportunity to experience the entire process of satellite development such as conceptual design, development, tests, launch and operation.

  • Push the envelope of what can be achieved by university satellite projects. TSUBAME provides access to space for students and the wider research community, as well as providing amateur radio operators an opportunity to participate in satellite project.

  • Contribute to the progress of amateur radio technology. The SRLL protocol developed at Tokyo Tech will be used as the main protocol for telemetry downlink. All data obtained in the amateur radio frequency band will be available via the internet.


  • TSUBAME MISSION OVERVIEW

  • Demonstration of satellite bus technology for 30kg-class microsatellite and verification of COTS (Commercial Off The Shelf) components such as micro-processors, memory and Li-ion batteries in the space environment

  • Demonstration of high-speed GMSK data downlink and SRLL communication protocol developed by the Tokyo Institute of Technology

  • Verification of Control Moment Gyros (CMG) developed by LSS. Attitude control system is the key technology for small satellites to conduct scientific and/or engineering missions. In TSUBAME project, we specifically focus on the development of new attitude control actuator, Control Moment Gyros, that can produce larger torque compared with reaction wheels.

  • High-speed attitude maneuver experiment using CMGs. CMG, on the other hand, has a problem in its control, which is singularity. The steering logic for the high-speed attitude maneuver and singularity avoidance will be demonstrated in-orbit. Some sensors such as camera, Hard X-ray Compton Polarimeter are also demonstrated together with the maneuver, for the purpose of demonstration of the application of the LSS's satellite bus.

  • Data collection experiment via the internet with the aid of radio amateurs all over the world.

  • AMATEUR RADIO SATELLITE

  • The TSUBAME project team has proposed using an amateur radio frequency for communication between the satellite and ground station. Regarding the satellite's operation, it is recognised that the radio-frequency spectrum is a precious finite resource and that an amateur satellite should be operated for the purposes stated in IARU’s guidelines, specifically is

  • To provide communication resources for the general amateur radio community and/or
  • To conduct technical investigation in all respects consistent with the Radio Regulations.